Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
  • B61F3/00—Types of bogies
  • B61F3/02—Types of bogies with more than one axle
  • B61F3/08—Types of bogies with more than one axle without driven axles or wheels
  • B61F3/10—Types of bogies with more than one axle without driven axles or wheels with three or more axles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
  • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
  • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles

Definitions

• the invention relates to a three-axle bogie with a formed of three frame elements divided frame for rail vehicles, especially for freight cars.
• the bogie comprises a middle wheel set and two Endrad accounts, the position of the better trackability and to compensate for irregularities of the track position is mutually variable.
• the bogie has the function to transmit when carrying and guiding the car body as well as the braking forces and possibly resulting forces and moments from the car body on the contact surfaces of the wheels.
• the better cornering results in better running characteristics, which lead to a higher ride comfort and a higher safety against derailment.
• the transmitted from the wheels to the rails lateral forces can be very large in the curve passage of a rail vehicle, which leads to increased wear of the wheels and the rails and heavy use of the axles and axle bearings.
• the known bogies are designed in such a way that the wheel axles or wheels adapt to the curve radius of the rail when running through curves in their running direction.
• Individual components of the bogie are about the vertical axis, also referred to as the vertical axis, movable.
• the three wheelsets are each mounted on a frame member.
• the wheelset consisting of two wheels, which are for example rotationally connected to each other via a wheelset shaft or designed as a loose gear, carries and guides the rail vehicle on the track and transmits the driving forces and braking forces from the vehicle to the track.
• the track forces and wear are to be reduced by radially adjusting the outer wheelsets.
• the wheelsets align themselves with the center of the rail arch.
• the starting angle of the wheels is reduced. Due to the geometry of the wheel profile and rail, the wheel sets tend to occupy a radial position.
• both three-axle bogies with one-piece frame and three-axle bogies with three-part frame are known.
• each wheelset is individually in stored a frame part.
• the frame parts are movably connected.
• the articulated connection of the frame parts improves the passage through track bends.
• the bogie can not be controlled as a complete bogie when passing through the track curves.
• a related bogie with three wheelsets for rail vehicles in this regard for example, from DE 1 292 157 A shows.
• a spring device is arranged between the individual wheelsets.
• the bias of the spring device allows a parallel position of the wheelsets up to a certain flange pressure. When the flange pressure is exceeded, a horizontal pivoting of the wheelsets is permitted. As a result, a curved control of the bogie as a whole is possible.
• DE 2 123 1 15 a multi-axle bogie for railway vehicles is described with a large total wheelbase.
• the bogie has longitudinally arranged on the outside adjustable wheelsets, which are each designed to be steerable.
• the outer gear sets are each pivotable about a pivot point and take when pivoting those side slopes that cause the track curvature and the unequal altitude of the tracks.
• FIGS. 1a, 1b a three-axle bogie 1 with a multi-part frame is known from the prior art in FIGS. 1a, 1b.
• Fig. 1 a the bogie is shown in a side view and in Fig. 1 b as a partial view in plan view.
• the frame of the bogie 1 has on each longitudinal side of two side members 7, which each receive the load of a Radsatzlagers a Endradsatzes 20a, 20b and half the load of a Radsatzlagers the Mittelradsatzes 18.
• the longitudinal members 7, which are located on the longitudinal sides, are coupled in pairs, in each case with a cross member 5, so that two transverse members 5 are the four Connecting longitudinal beams 7 with each other, wherein two articulated by a cross member 5 longitudinal beams 7 form a half frame.
• the mutually parallel cross member 5 are in turn movably connected to each other via two side support, which are rigidly coupled to each other at the level of the transverse center axis of the bogie with another cross member.
• the aligned on the transverse central axis cross member has on the top and on the longitudinal center axis of the bogie on a rotary pan 13 for receiving the car body.
• the eight joints of the bogie frame are subject to high wear and thus require a lot of maintenance.
• the articulated connections allow a transverse displacement of the wheel sets and thus an offset transversely to the direction of travel x, but no radial adjustment of the wheelsets with respect to a curved track course.
• the bogie of FIGS. 1 a, 1 b thus allows a parallel displacement of the wheelsets but no rotation with respect to the vertical axis.
• the bogies known in the prior art is inherent that they are structurally complex and produce a high maintenance. In addition, when passing through a curve, they allow no or only insufficient radial adjustment of the wheel sets and thereby cause a large wheel wear and rail wear, along with a high level of noise pollution.
• Object of the present invention is to provide a three-axle bogie that causes minimal wear of the wheels and the rails in particular when driving through track curves.
• the noise emissions are compared to conventional bogies to reduce.
• the construction and the maintenance are contrary to the State of the art bogies be less expensive and less expensive.
• the object is achieved by a three-axle bogie for rail vehicles.
• the bogie comprises a frame formed of three frame members formed frame and a middle wheel set and two Endrad accounts.
• the two wheels of a wheel set are connected to each other torsionally rigid, for example via a wheelset or formed as a loose gear.
• Two frame members each have a cross member connected to a side member.
• the longitudinal member is formed with a free longitudinal member end.
• Each connected to a Endradsatz frame elements which are also referred to as half-frame, are arranged aligned with the side rails to each other.
• the free longitudinal beam ends of the frame members are conceptually coupled via Radsatzfedern and a Radsatzlager with the Mittelradsatz ball joint, in particular rotatably about a rotational axis, coupled.
• the frame members are also connected via a rotary pan each with the third frame member ball joint.
• a connection which is rotatable about a vertical axis of the bogie is provided, wherein the rotation about the vertical axis constitutes a movement in the case of curved entrances and arches.
• the turntable allows for uphill dives, troughs or trips on vertical track position error also a rotation about the horizontal axis transverse to the direction of travel and a rolling as a rotary motion about the horizontal axis in the direction of travel.
• the frame members are formed with the Endrad arrangementsn to each other and with respect to the Mittelradsatz and with respect to the third frame member rotatable.
• the three-axle bogie ensured by the coupling of the movements of the wheelsets a radial adjustment of the wheelsets.
• the radial adjustment of the Axle axles refers to the vertical axis of the bogie, in particular to a curve adapted to the leadership about the vertical axis. This makes it possible to easily drive on track curves with optimized curve handling.
• the two frame members each have an outer cross member and an inner cross member, which are interconnected via a longitudinal spar and the side member.
• the outer cross member is arranged in the direction of travel on the outside of the bogie, while the inner cross member is aligned in the direction of the Mittelradsatzes.
• the outer cross member and the inner cross member are preferably arranged in the direction of the transverse center axis of the bogie, which extends in the direction of travel, and parallel to each other.
• the longitudinal spar and the longitudinal beam are arranged in the direction of the longitudinal center axis, which is transverse, in particular perpendicular to the direction of travel, and arranged parallel to each other.
• the longitudinal spar is connected according to an embodiment of the invention at a first end to a first end of the outer cross member and at a second end to a first end of the inner cross member.
• the second ends of the cross member are coupled to the side member.
• the cross members are rigidly joined together with the longitudinal spar and the longitudinal member forming a closed rectangular frame.
• the Endradsatz is advantageously rotatably supported within the frame, about a rotational axis of the Endradsatzes.
• the wheelset bearings or the axle bearings and the frame parts are arranged outside the wheel discs, so it is an externally mounted bogie.
• the one Endradsatz holding frame members each have a Leksverstrebung, which extends parallel to the side member and is disposed between the longitudinal member and the longitudinal spar.
• the longitudinal strut, as well as the longitudinal spar and the longitudinal member, rigidly connected to the cross members.
• the longitudinal strut is provided on the top with the rotating pan of the frame element.
• the rigid assembly of the cross member with the longitudinal spar, the longitudinal member and the longitudinal strut is preferably designed as a welded joint.
• the third frame element also referred to as traverse
• traverse is formed from mutually parallel side beams and parallel aligned connecting beams, which in combination have the shape of a parallelogram.
• a center carrier is also provided parallel to the side supports.
• another rotary pan is arranged, which represents the connecting element between the bogie and the car body.
• the side support and the center support are arranged obliquely to the longitudinal center axis of the bogie.
• connection carriers are preferably aligned perpendicular to the longitudinal central axis and thus in the direction of the transverse center axis and the side carrier and the center carrier are formed connecting.
• the rotary pan of the traverse is arranged as a connecting element between the bogie and the car body at the intersection of the longitudinal center axis and the transverse center axis of the bogie.
• the rotating pan of the traverse and the rotating pans of the Endrad accounts holding half frame are arranged on a straight connecting line, wherein the rotating pan of the traverse in the middle between the Revolving pans of the half frame is located. The distances between the adjacent pans are equal.
• the power absorbed by the rotary pan of the traverse from the car body is advantageous evenly transferable to the rotating pans of the half-frame.
• the rotary pans of the half-frame are in turn arranged according to an embodiment of the invention in each case in the center of gravity of a triangle formed by three load-transmitting wheelset bearing of the half-frame.
• the recorded by the rotary pan of the half-frame force is thus advantageous evenly on the three axleboxes of the half-frame, that is, the two wheelset a Endradsatzes and a Radsatzlager the Mittelradsatzes, transferable.
• the rotary pans of the half-frames are also preferably arranged in a horizontal plane and spaced from the longitudinal center axis and on opposite sides of the longitudinal center axis of the bogie.
• the three-axle bogie ensures vertical load balancing when transferring and uniform distribution of the forces to be transferred from the car body to the bogie and from the bogie via the wheelsets to the rail.
• the Traverse transmits the car load evenly on two half-frames.
• the load is transmitted from the truss via the rotary pan in the center of the three wheelset bearings on each half frame and evenly divided.
• Each of the two half-frames transmits and distributes the recorded load now on a two wheelset bearing end wheelset and a Radsatzlager the Mittelradsatzes.
• the traverse as the third frame member, on the upper side, in particular on the upper side of a side support, a slider for supporting the car body.
• the Turntable Traverse and the slider are designed as connecting elements of the bogie to the car body such that a rotation of the car body is ensured with respect to the third frame member.
• a plurality, preferably two, sliders are arranged on the upper side of the traverse.
• the second slider is advantageously provided on the second side support. It is advantageous if the two sliders and the turntable on a line, the transverse center axis of the bogie, aligned.
• the car body is supported on both sides of the rotating pan of the traverse on the Traverse.
• the designed as a third frame element traverse is also preferably formed on the bottom with resilient sliders.
• the advantageously arranged at the vertices of the parallelogram traverse, resilient sliders in combination with the rotating pans of the half frame allow the Traverse against the half frame ball joint to store.
• a further advantageous embodiment of the invention is that the wheelsets are each mounted by means of a spring elements having holder on the frame members.
• a spring element as a mechanical element and a spring element as a hydraulic element, that is designed as a hydraulic damper.
• the three-part frame of the three-axle bogie with the ball joint interconnected frame members has over undivided one-piece frame has the advantage that the transmitted especially when cornering on the wheels and thus the frame elements loads do not lead to tension of the frame structure.
• the frame elements shared bogie frame also learn when crossing track distortions a much lower intrinsic twist than one-piece frame, which advantageously the burden of Frame elements reduced.
• the frame elements are then no longer interpreted for the burden of self-twist, can be significantly smaller dimensions and are thus easier.
• passing the track warps does not or only slightly changes the wheel loads, which in turn can be the cause of derailment.
• the execution of the bogie with split frame is therefore preferably used in poor track conditions, for example in track conditions with connections.
• the bogies according to the invention show predominantly pure rolling behavior both when passing through large track curves and when crossing over track distortions and the direction of movement of the bogie or the wheels is advantageously adapted to the track layout.
• the coupling of the transverse displacement of the center wheel set with the radial adjustment of the Endrad an causes in the track curve less wheel wear and a lower rail wear and a lower rolling resistance and a quieter running.
• rolling resistance and rolling noise are further reduced. Due to the three-point support of the half-frames on the wheelset bearings, the static wheel load differences are minimized.
• the bogies according to the invention therefore have a higher derailment safety and better running properties than conventional three-axle bogies.
• the three frame elements are constructed structurally simpler than elements of known one-piece frame triaxial bogies. Further details, features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings. It shows a three-axle bogie with three-part frame:
• Fig. 3 in plan view without traverse as the third frame element
• Fig. 4 in plan view without traverse as a third frame element.
• Fig. 2 shows a three-axle bogie 1 with three-part frame in a perspective view.
• the first and second frame elements 2a, 2b also referred to as first and second half frames 2a, 2b, each comprise an outer cross member 4, an inner cross member 5 and a longitudinal spar 6 and a longitudinal member 7.
• the cross members 4, 5 are perpendicular to the direction of travel x, that is, in the direction of the y-axis and thus arranged transversely to the direction of travel, as well as parallel to each other.
• the longitudinal beam 6 and the longitudinal member 7 are also arranged parallel to each other, however, in the direction of travel x, so that the cross member 4, 5 are aligned perpendicular to the longitudinal beam 6 and the longitudinal member 7.
• the longitudinal spar 6 is rigidly connected at its first end to the first end of the outer cross member 4 and at its second end to the first end of the inner cross member 5.
• the longitudinal beam 6 has a length which is equal to the distance of the cross member 4, 5 in the direction of travel x.
• the x-axis corresponds to the axis in the direction of travel
• the y-axis corresponds to the axis perpendicular or transverse to the direction of travel.
• Both the x-axis and the y-axis represent axes in the horizontal plane of the bogie 1.
• the axis in the z-direction is the vertical axis of the bogie 1 and describes the vertical direction perpendicular to the horizontal plane.
• the second ends of the cross members 4, 5 are each rigidly connected to the longitudinal member 7, wherein the second end of the outer cross member 4 is coupled to the first end of the longitudinal member 7.
• the second end of the inner Cross member 5 is added in the central region of the longitudinal extent of the longitudinal member 7 on the longitudinal member 7, so that the longitudinal member 7 has a free longitudinal beam end 8.
• the rectangular frame is aligned in the horizontal plane of the bogie 1, which is spanned by the x-axis and the y-axis.
• a wheel set 20a, 20b is arranged, which, relative to the entire bogie 1, each represent an outer wheel set or a Endradsatz 20a, 20b.
• the wheel sets 20a, 20b are supported at their ends on the one hand on the longitudinal spar 6 and on the other on the longitudinal member 7.
• Each bracket has a suspension.
• the suspension comprises three spring elements 23, 24, wherein two spring elements 23 are formed as Radsatzfedern 23 and a spring element 24 as a hydraulic damper 24.
• As Radsatzfedern 23 rubber cone springs are preferably used, which are arranged on both sides of the ends of the wheelset 20a, 20b.
• the Radsatzfedern 23 are fixed at the height of the center line of the axle of the wheelset 20a, 20b.
• coil springs are used with friction damping.
• the half frames 2a, 2b also have a longitudinal strut 9, which is arranged parallel to the longitudinal member 7 and the longitudinal spar 6 and also rigidly connected to the cross members 4, 5.
• This compound is also preferably designed as a welded connection.
• the longitudinal strut 9 is off-center of the longitudinal central axis 26 of the bogie 1 and thus also of the wheelset 20a, 20b arranged.
• the longitudinal strut 9 is provided with a rotary pan 16 a, 16 b, which is designed as a support of the third frame element 3.
• the third frame element 3, also referred to as traverse 3 is formed from two side members 10 oriented parallel to one another and likewise connecting members 12 which are aligned parallel to one another.
• the connecting beams 12 are aligned in the y-direction and thus perpendicular to the direction x or to the direction of the longitudinal center axis 26 of the bogie 1 and connect the obliquely arranged to the x-axis side carrier 10.
• connecting beams 12 are each two connecting beams 12 at their ends each rigidly connected to one end of a side support 10, so that the outer border is formed in the form of the parallelogram.
• Two further connection carrier 12 are arranged in the interior of the border of the cross member 3 such that their ends are each coupled to a side support 10 and ensure greater stability of the cross member 3.
• the traverse 3 further comprises a central support 1 1, which in turn is aligned parallel to the side supports 10.
• the center support 1 1 is arranged centrally between the side supports 10 and is also rigidly connected to the connecting beams 12. All connections between the side beams 10, the center support 1 1 and the connecting beams 12 are preferably made welded.
• the side members 10, the center girder 11 and the connecting beams 12 span a plane which is horizontally aligned and thus lies parallel to the plane defined by the x-direction and the y-direction.
• the traverse 3 has in its center of gravity on a rotating pan 13, which is aligned in the z-direction and thus in the horizontal direction of the bogie 1.
• the rotary pan 13 is arranged centrally on the middle support 11 between the two inner connecting beams 12.
• the center of gravity of the traverse 3 corresponds to the center of gravity and the center of the bogie. 1
• the rotating pan 13 serves as a connecting element 13 from the bogie 1 to the car body.
• the car body is mounted on the turntable 13 with the bogie 1 and also supported by sliders 14 on the cross member 3.
• the sliders 14 are at the level of the transverse central axis 28 on the Side beams 10 of the cross member 3 are arranged.
• the rotary pan 13, in conjunction with the sliders 14, enables the car body to be rotated relative to the crossmember 3.
• the three frame elements 2a, 2b, 3 are movably coupled to each other in such a way that the halfframes 2a, 2b communicate with each other via the crossmember 3.
• the traverse 3 is supported on the outer sides with respect to the x-direction and thus the outer connecting beams 12 to the frame members 2a, 2b.
• Each half frame 2 a, 2 b has three connection points 15 with the traverse 3.
• the main connection is ensured via the rotary pan 16a, 16b, which is arranged on the longitudinal strut 9 of the half-frame 2a, 2b.
• the traverse 3 is at the connection point of the outer connection carrier 12 with the center carrier 1 1, and thus in the middle of the outer connection carrier 12 with respect to the y-direction, mounted on the rotary pan 16 a, 16 b.
• the cross member 3 at the end points of the outer connection support 12 and thus the vertices of the quadrangular Parallelogrammform also preferably via resilient sliders 15 with the respective half frame 2a, 2b movably supported.
• the resilient sliders 15 dampen by friction the Auswebterrorismen and rolling movements of the bogie 1 and allow in combination with the rotating pan 16 a, 16 b twisting within the spanned in the x-direction and y-direction horizontal
• the half-frames 2 a, 2 b respectively take on the load of the two wheelset bearings of the end wheel sets 20 a, 20 b as well as the load of a wheelset bearing of the middle wheel set 18.
• the loads of the wheelset bearing of Endrad accounts 20a, 20b are doing via the brackets, comprising the three spring elements 23, 24, on the one hand to the longitudinal spar 6 and on the other hand to the side member 7 transmitted.
• the load of the wheelset bearing of the center wheel set 18 is also received by the longitudinal member 7.
• the Mittelradsatz 18 is arranged with a respective Radsatzlager also via a three spring elements 23, 24 comprehensive support on the free longitudinal beam end 8 of the longitudinal member 7 on the half frame 2a, 2b supported.
• the half-frames 2a, 2b are connected to the middle wheel set 18 and the associated brackets ball joint.
• the aligned in the vertical and thus in the z-direction of rotation axes 19a, 19b each extend at the ends of the center wheel set 18 through the suspension at the free longitudinal beam end 8 centrally between the two Radsatzfedern 23.
• the mobility between the half-frames 2 a, 2 b and the middle wheel set 18 is ensured by the horizontal softness of the spring elements 23.
• the half-frames 2 a, 2 b are thus pivotally connected to one another via the middle gearset 18 and secondly via the crossbeam 3, in particular rotatably about the vertical axis z of the bogie 1.
• the movable connections ensure a radial adjustment of the wheel sets 18, 20a, 20b to each other.
• the rotating pans 13, 16a, 16b are designed as articulated joints, comparable to axial spherical plain bearings.
• Each half-frame 2a, 2b is freely rotatable about the respective rotary pan 16a, 16b. The movement is limited by the stops of the lateral, on the longitudinal member 7 between the cross member 3 and the half frame 2 a, 2 b, sliders 15.
• the wheels of a wheel set 18, 20a, 20b can assume different positions in the z direction.
• the brake elements 22 of the end wheel sets 20a, 20b become clear in the form of a brake disk 22.
• the force-applying braking devices are arranged on the half-frames 2 a, 2 b via holding devices 21.
• the holding devices 21 are formed on both sides on the inner cross member 5, so that all wheelsets 18, 20a, 20b are executed as braked wheelsets.
• Einzelradsatzbremsen be used with cylinders in the bogie 1.
• the three-axle bogie 1 is shown with three-part frame in plan view without cross member 3 as a third frame member 3 when passing through a track curve 25. On the view of Traverse 3 was omitted for reasons of clarity.
• the half frames 2a, 2b When passing through a track curve 25, the half frames 2a, 2b are rotated about the axes of rotation 19a, 19b due to the forces occurring on the flange.
• the force on the wheel flange is in each case via the wheelsets 20a, 20b and the brackets on the longitudinal beams 6 and longitudinal beams 7 on the half frame 2a, 2b transmitted.
• the rotation of the half frame 2a, 2b thus causes a radial adjustment R of Endrad accounts 20a, 20b.
• the radial adjustment R is the angle that the Endrad accounts 20a, 20b with respect to the initial position, that is the position when driving straight or a ride on a straight, unbent track piece, are taken.
• the radial adjustment R thus corresponds to a comparable steering angle, the steering or rotation due to forces occurring on the wheel flange of the wheels is effected.
• the wheelsets 20a, 20b give with the automatic rotation of leading to extreme wear of the wheels and rails flange forces.
• the half-frames 2a, 2b are also rotated relative to the traverse 3 (not shown) about the axes of rotation 17a, 17b when passing through the track bend 25.
• the axes of rotation 17a, 17b extend in each case in the z direction the bearing support point 17a, 17b of the traverse 3 with respect to the half frame 2a, 2b.
• Fig. 4 shows the three-axle bogie 1 with three-part frame in plan view without Traverse 3 as the third frame member 3 in straight travel or a ride on a straight, unbent track piece.
• the wheel sets 18, 20a, 20a are aligned parallel and in the y direction not offset from each other.
• the half frames 2a, 2b are not rotated against each other.
• the car load is transmitted via the rotary pan 13 as a connecting element between the car body and the bogie 1 on the bogie 1, in particular the cross member 3, not shown.
• the car load is taken in the center and thus in the center of gravity of the bogie 1.
• the center is defined in the illustrated state of the bogie 1 by the intersection of the longitudinal central axis 26 with the transverse central axis 28.
• the traverse 3 divides the load received via the rotary pan 13 via the rotary pans 16a, 16b onto the two half frames 2a, 2b.
• the rotary pan 13 of the crossmember 3 and the pivoting pans 16a, 16b of the half-frames 2a, 2b are arranged on a connecting line 27a as a force distribution line, wherein the rotating pan 13 to the rotary pans 16a, 16b has the same distance.
• the half-frames 2a, 2b transmit the load acting in each case uniformly on the two wheelset bearings of a Endradsatzes 20a, 20b as well as on a wheelset of the Mittelradsatzes 18.
• the force on the rail transmitting wheelset bearings are characterized by the connecting lines 27b, 27c connected to each other.
• the rotating pans 16a, 16b of the half-frames 2a, 2b are arranged for uniformly distributing the load in each case in the center of gravity of the triangle formed by the three load-transmitting wheelset bearings of the half-frames 2a, 2b.
• Fig. 4 illustrates that the center of gravity of the triangle and thus the arrangement of the rotating pans 16a, 16b results from the intersection of the bisectors of the triangle.
• the center of gravity hereby corresponds to the location at which the mass distribution of a body or the area distribution of a surface has an average value. The forces acting on the three wheelset bearings can be combined in this center of gravity.
• the arranged in the center of gravity rotary cups 16a, 16b of the half frame 2a, 2b are spaced from the longitudinal central axis 26 of the bogie 1 is formed.
• the rotary pans 16a, 16b are arranged on a common horizontal plane but on opposite sides of the longitudinal central axis 26.
• the structural structure of the bogie 1 is also much easier than a one-piece bogie.

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• 2010
  • 2010-09-17 DE DE201010040955 patent/DE102010040955B4/de not_active Expired - Fee Related
• 2011
  • 2011-09-15 WO PCT/EP2011/065993 patent/WO2012035094A1/de active Application Filing
  • 2011-09-15 EP EP11757319.6A patent/EP2616301A1/de not_active Withdrawn
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